New! – Dark Mode for MacOS

Dark Mode for macOS

Easily Switch from Dark to Light

Easily switch between themes using our new "Theme" button to the Postbox toolbar. We've also brought Dark Mode to previous versions of macOS, starting with El Capitan 10.11 and later. (Windows Dark Mode will be available in late 2018.)

Power Through Your Day

Send Large Files Fast

Send links to large files in Dropbox, Box, and OneDrive, instead of the files themselves.

Easily Reuse Attachments

Browse files or images in the compose window, reuse with just a click.

Keep Yourself on Target

Track the time and effort you spend composing messages.

Chaos, Meet Order

Simplify Your View

Tackle what’s important using Postbox’s innovative Focus Pane.

Filter in Real-Time

Isolate messages that you need, and filter out the rest, with a single click.